So root etc works and still having basic and cts pass?? Wow. Not works on custom rn. I mean when I using the root method, flash in exkm. Sorry for the question but I heard it said that A11 root breaks cts and basic
Of course your data will be deleted. Just make a backup. I use the app swift backup for this. Titanium Backup is also an option. And of course the phone will work properly if you have done this operation.